Deng Julong

Deng Julong (Chinese: 邓聚龙; January, 1933 – June 22, 2013) was a professor of Huazhong University of Science and Technology, Wuhan, China. He is acknowledged as the founder of Grey system theory (GST), first proposed in 1982 with the publication of his paper “Control problems of grey systems,” in the international journal Systems and Control Letter, edited at the time by Roger W. Brockett, a professor at Harvard University. This theory underlies the theory of grey relational analysis. His theory inspired many noted scholars like Jeffrey Yi-Lin Forrest and Liu Sifeng.[1][2][3]

This is a Chinese name; the family name is Deng.

The works of Professor Lotfi A. Zadeh significantly inspired Deng and the uncertainty of the Deng Xiaoping era inspired him to work on uncertain systems. In 1965, he proposed the theory of multivariate system control.[4] His academic paper, "an integrated approach to the parallel calibration of multivariate linear systems", was published in Acta Automatica (Volume 3, Issue 1), a journal by Chinese Association of Automation and the Institute of Automation, Chinese Academy of Sciences, which was later summarized by the Soviet Academy of Sciences at the time.[5] He had been to Aerospace Valley (France), University of Maryland (USA), National Central University (Taiwan) and Tatung University (Taiwan)[6] for delivering lectures on Grey System Theory. His works has been cited by more than 30,000 times, according to CNKI database. His highly cited paper, his first paper on Grey Systems, received more than 3500 citations till February 2019, according to Google Scholar.

He was honored at the 2011 congress of the World Organisation of Systems and Cybernetics by the award of an Honorary Fellowship.[7] On September 7, 2019, German Chancellor Angela Merkel visited Wuhan and delivered a speech at the Huazhong University of Science and Technology. In her speech, Merkel highlighted the influence of Grey System Theory and its pioneers. In her speech, she said that the works of Professor Deng, the founder of grey system theory, and Professor Liu Sifeng, “have made a profound impact on the world.”[8][9]

He was born in Lianyuan, Hunan. He died at the age of 80 in China.

References
  1. Liu, SF., Yang, Y., and Forrest, J. (2017). Grey Data Analysis. Springer.
  2. Liu, SF, and Forrest, J. (2007). The Current Developing Status on Grey System Theory. The Journal of Grey System, 2, pp. 111–123
  3. Liu, SF., Forrest, J., and Yang, Y. (2012), A brief introduction to grey systems theory, Grey Systems: Theory and Application, 2(2), pp. 89–104
  4. Deng, Julong (1965). "Synthesis of feedback controllers for multivariable linear control systems". Scientia Sinica. XV: 416–431.
  5. "百度百科_全球最大中文百科全书". baike.baidu.com. Retrieved 2019-03-02.
  6. "Chinese Grey System Association". grey.org.tw. Retrieved 2019-04-10.
  7. "International Association of Grey Systems and Uncertainty Analysis | International Association of Grey Systems and Uncertainty Analysis". Retrieved 2019-04-10.
  8. "German Chancellor Merkel praises China's advances in System Theory & Artificial Intelligence". Science Insight. Sep 19, 2019.
  9. Liu, Sifeng (2020). "On Spectral Analysis and New Research Directions in Grey System Theory". The Journal of Grey System. Research Information Ltd. (UK). 32(1): 108–117 – via EBSCO.
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